Until there is actual proof that he dumped his coins, it's just speculation. I've seen lots of situations where the easy conclusion to draw was not right. A lot of innocent people for example have been released from prison years later because dna proved the easy conclusion the courts/jury drew were wrong.
He took down cryptoave during the transaction malleability fiasco, says its possible it could be back up this month. To me it made sense to make sure the exchange was secure before moving forward, as no one wants what happened to cryptorush and several other exchanges to happen to cryptoave.
I'm not at all saying you're wrong, but you're starting a witch hunt with no real proof.